Resource management protocol for a configurable network router

• US 7,293,090 B1
• Filed: 11/15/2000
• Issued: 11/06/2007
• Est. Priority Date: 01/15/1999
• Status: Expired due to Fees

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Parsi, Vahid, Baghdasarian, Zareh, Zadikian, H. Michael, Saleh, Ali Najib, Adler, John C.
• Primary Examiner(s): NGUYEN, HANH N
• Application Number:
  US09/714,784
• Time in Patent Office: 2,547 Days
• Field of Search: 370/400, 370/395.21, 370/468, 370/412, 370/419, 370/396, 370/395.41, 370/408, 370/465, 370/450, 709/229, 709/226, 709/224, 709/223, 709/227, 709/230, 709/232, 709/233, 709/225, 714/30, 714/12, 714/9, 714/10, 701/23, 701/24, 701/50
• US Class Current: 709/226
• CPC Class Codes: H04L 43/0817 by checking functioning
• CPC Class Codes: H04L 45/00 Routing or path finding of packets in data switching networks routing or path finding in wireless networks H04W40/00
• CPC Class Codes: H04L 45/60 Router architectures

Abstract

A method of managing a communications system is disclosed. The method begins with the creation of a resource control block corresponding to a resource of the communications system. The communications system includes, for example, a processor and a resource coupled to the processor. The resource control block maintains information regarding the resource. The method also provides for the maintenance of the resource control block. The processor is configured to maintain the resource control block, and the resource control block is maintained by the processor in response to communications (e.g., a keep-alive message) between the processor and the resource. This embodiment can also include the creation of a processor resource control block corresponding to the processor that is created by the controller in response to a power-up message from the resource. The resource can be, for example, a hardware component of the communications system.

Claims

1. A resource management system for a communications system comprising:

a resource manager; and

a resource control block, wherein

said resource control block corresponds to a resource of said communications system,

said resource is of one resource type of a plurality of resource types,

said resource control block maintains information regarding said resource,

said resource control block comprises a generic section containing information applicable to each of said plurality of said resource types,

said resource control block comprises a resource-specific section containing information applicable to said one resource type, and

said resource manager is configured to assign an identifier to said resource control block.

2. The resource management system of claim 1, wherein said resource is a hardware component of said communications system.

3. The resource management system of claim 1, wherein said information includes a status of said resource.

4. The resource management system of claim 1, wherein

said communications system comprises a processor, communicatively coupled to said resource,

said processor is configured to execute said resource manager, and

said resource manager is configured to maintain said resource control block in response to communications between said processor and said resource.

5. The resource management system of claim 1, further comprising:

a plurality of resource control blocks, wherein

said resource control block is a one of said plurality of resource control blocks,

said identifier uniquely identifies said resource within said communications system, and

said identifier is configured to serve as an index into a table of pointers, each of said pointers pointing to at least one of said plurality of resource control blocks.

6. The resource management system of claim 1, further comprising:

a plurality of resources, wherein

said plurality of resources include said resource,

said plurality of resources are coupled to one another in a hierarchy,

each of said plurality of resources is one of said plurality of resource types, and

all of said plurality of resources that are in a single level of said hierarchy are of a single one of said plurality of resource types; and

a plurality of resource control blocks, wherein

said plurality of resource control blocks include said resource control block, and

each of said plurality of resource control blocks correspond to one of said plurality of resources.

7. The resource management system of claim 6, further comprising:

a plurality of resource managers, wherein

said plurality of resource managers includes said resource manager,

each of said plurality of resource managers maintains a hierarchical list of said plurality of resource control blocks, and

said hierarchical list represents resources controlled by said each of said plurality of resource managers.

8. The resource management system of claim 7, wherein said hierarchical list is a resource list and said resource list stores information regarding said hierarchy and interdependencies of said plurality of resources.

9. The resource management system of claim 8, wherein

each one of a first plurality of said plurality of resource managers is a shelf resource manager, and

each one of a first plurality of said plurality of resource control blocks is a shelf resource control block.

10. The resource management system of claim 9, wherein

each one of a second plurality of said plurality of resource managers is a group resource manager, and

each one of a second plurality of plurality of said resource control blocks is a group resource control block.

11. The resource management system of claim 10, wherein

each one of a third plurality of said plurality of resource managers is a line card resource manager, and

each one of a third plurality of said plurality of resource control blocks is a line card resource control block.

12. The resource management system of claim 11, wherein

each one of said a second plurality of said plurality of resource control blocks contains information from at least one of said third plurality of said plurality of resource control blocks,

each one of said a first plurality of said plurality of resource control blocks contains information from at least one of said second plurality of said plurality of resource control blocks, and

said resource control block contains information from at least one of said first plurality of said plurality of resource control blocks.

13. The resource management system of claim 7, wherein

said resource manager is a node resource manager, and

said resource control block is a node resource control block.

14. The resource management system of claim 6, wherein

said resource manager is a node resource manager, and

said resource control block is a node resource control block.

15. A resource management system for a communications system comprising:

a resource control block comprising a generic section and a resource-specific section; and

a resource manager, wherein

said communications system includes a system processor having a resource communicatively coupled thereto,

said system processor is configured to execute said resource manager,

said resource is of one resource type of a plurality of resource types,

said generic section contains information applicable to each of said plurality of resource types, and said resource-specific section contains information applicable to said one resource type, and

said resource manager is configured to assign an identifier to said resource control block.

16. The resource management system of claim 15, wherein said system processor is configured to create said resource control block.

17. The resource management system of claim 16, wherein

said resource manager is further configured to maintain said resource control block in response to communications between said system processor and said resource.

18. The resource management system of claim 17, wherein said resource control block comprises status information.

19. The resource management system of claim 17, wherein said resource manager is configured to cause said system processor to create said resource control block.

20. The resource management system of claim 17, wherein said resource is a hardware component of said communications system.

21. The resource management system of claim 17, further comprising:

a system resource control block, wherein said system resource control block maintains information regarding a status of said system processor.

22. The resource management system of claim 17, further comprising:

a plurality of resource control blocks, wherein

said resource control block is a one of said resource control blocks,

said identifier uniquely identifies said resource within said communications system, and

said identifier is configured to serve as an index into a table of pointers, each of said pointers pointing to at least one of said plurality of resource control blocks.

23. The resource management system of claim 17, wherein

said resource is one of a first plurality of resources, where each one of said first plurality of resources is coupled to said system processor,

said resource control block is one of a first plurality of resource control blocks, and

each one of said first plurality of resource control blocks is stored on a corresponding one of said first plurality of resources.

24. The resource management system of claim 23, further comprising:

a plurality of resource managers, wherein

each one of said plurality of resource managers runs on a corresponding one of said first plurality of resources and maintains a corresponding one of said first plurality of resource control blocks.

25. The resource management system of claim 23, further comprising

a second plurality of resources, wherein

at least one of said second plurality of resources is coupled to said each one of said first plurality of resources, and

said each one of said first plurality of resources comprises a resource processor;

a plurality of resource managers, each resource processor of said first plurality of resources configured to run a corresponding one of said first plurality of resource managers; and

a second plurality of resource control blocks, wherein

each one of said second plurality of resource control blocks maintains information regarding a status of a one of said second plurality of resources,

said each resource processor of said first plurality of resources is configured to maintain a one of said second plurality of resource control blocks corresponding to said at least one of said second plurality of resources in response to communications with said at least one of said second plurality of resources.

26. The resource management system of claim 23, wherein said system processor is configured to maintain information regarding said one of said second plurality of resource control blocks corresponding to said at least one of said second plurality of resources in response to communications with said at least one of said second plurality of resources and a corresponding one of said each resource processor of said first plurality of resources.

27. The resource management system of claim 17, wherein said resource manager is further configured to maintain network resource information, said network resource information corresponding to resources available to said system processor via a network to which said communications system is coupled.

28. A method of managing a communications system, said method comprising:

creating a resource control block comprising a generic section and a resource-specific section and corresponding to a resource of said communications system, and

assigning an identifier to said resource control block using a resource manager, wherein

said communications system comprises a processor and said resource,

said resource is of one resource type of a plurality of resource types,

said generic section contains information applicable to each of said plurality of resource types, and said resource-specific section contains information applicable to said one resource type,

said resource is coupled to said processor, and

said resource control block maintains information regarding a status of said resource.

29. The method of claim 28, wherein said resource is a hardware component of said communications system.

30. The method of claim 28, wherein

said resource control block is a one of a plurality of resource control blocks,

said identifier uniquely identifies said resource within said communications system, and

said identifier is configured to serve as an index into a table of pointers, each of said pointers pointing to at least one of said plurality of resource control blocks.

31. The method of claim 28, further comprising:

maintaining said resource control block, wherein

said processor is configured to maintain said resource control block,

said resource control block is maintained by said processor in response to communications between said processor and said resource.

32. The method of claim 31, further comprising:

creating a processor resource control block corresponding to said processor.

33. The method of claim 31, further comprising:

receiving a power-up message from said resource, wherein said resource control block is created by said processor in response to said power-up message from said resource.

34. The method of claim 31, further comprising:

maintaining said resource control block in response to a receipt of a keep-alive message from said resource.

35. The method of claim 31, further comprising:

maintaining said resource control block in response to a receipt of a reply from said resource, wherein said reply is generated in response to a protocol message sent by said processor.

36. The method of claim 31, wherein a protocol is employed in said communications.

37. The method of claim 36, wherein

said protocol supports protocol messages configured to cause initialization of said resource,

said processor to download a command to said resource,

said resource to execute said command,

said resource to provide status information to said processor, and

said resource to perform a self-test.

38. The method of claim 31, further comprising

for each one of a plurality of resources, creating a resource control block for each of said resources coupled to said each one of said resources, wherein

said resource is one of said plurality of resources,

each one of said plurality of resources is communicatively coupled to at least one other of said plurality of resources,

said plurality of resources are arranged in a hierarchy having a plurality of levels, and

said each of said plurality of resources coupled to said each one of said plurality of resources is at a one of said levels below a one of said plurality of levels of said each one of said plurality of resources.

39. The method of claim 38, further comprising:

maintaining each one of said plurality of resource control blocks on a corresponding one of said plurality of resources, wherein

a one of a plurality of resource managers corresponding to said each one of said plurality of resource control blocks performs said maintaining of said each one of said plurality of resource control blocks; and

maintaining a resource list for each one of said plurality of resource managers, wherein

each said resource list is a hierarchical list of ones of said plurality of resource control blocks that correspond to ones of said plurality of resources under control of a one of said plurality of resources corresponding to said each one of said plurality of resource managers.

40. The method of claim 39, wherein said resource list represents at least a portion of said hierarchy and interdependencies between ones of said plurality of resources.

41. An apparatus for managing a communications system, said method comprising:

means for creating a resource control block comprising a generic section and a resource-specific section and corresponding to a resource of said communications system, and

means for assigning an identifier to said resource control block using a resource manager, wherein

said communications system comprises a processor and said resource,

said resource is of one resource type of a plurality of resource types,

said generic section contains information applicable to each of said plurality of resource types, and said resource-specific section contains information applicable to said one resource type,

said resource is coupled to said processor, and

said resource control block maintains information regarding a status of said resource.

42. The apparatus of claim 41, wherein said resource is a hardware component of said communications system.

43. The apparatus of claim 41, wherein

said resource control block is a one of a plurality of resource control blocks,

said identifier uniquely identifies said resource within said communications system, and

said identifier is configured to serve as an index into a table of pointers, each of said pointers pointing to at least one of said plurality of resource control blocks.

44. The apparatus of claim 41, further comprising:

means for maintaining said resource control block, wherein

said processor is configured to maintain said resource control block,

said resource control block is maintained by said processor in response to communications with said resource.

45. The apparatus of claim 44, further comprising:

means for creating a processor resource control block corresponding to said processor.

46. The apparatus of claim 44, further comprising:

means for receiving a power-up message from said resource, wherein said resource control block is created by said processor in response to said power-up message from said resource.

47. The apparatus of claim 44, further comprising:

means for maintaining said resource control block in response to a receipt of a keep-alive message from said resource.

48. The apparatus of claim 44, further comprising:

means for maintaining said resource control block in response to a receipt of a reply from said resource, wherein said reply is generated in response to a protocol message sent by said processor.

49. The apparatus claim 44, wherein a protocol is employed in said communications.

50. The apparatus of claim 49, wherein

said protocol supports protocol messages configured to cause initialization of said resource,

said processor to download a command to said resource,

said resource to execute said command,

said resource to provide status information to said processor, and

said resource to perform a self-test.

51. The apparatus of claim 44, further comprising

means for creating, for each one of a plurality of resources, a resource control block for each of said plurality of resources coupled to said each one of said plurality of resources, wherein

said resource is one of said plurality of resources,

each one of said plurality of resources is communicatively coupled to at least one other of said plurality of resources,

said plurality of resources are arranged in a hierarchy having a plurality of levels, and

said each of said plurality of resources coupled to said each one of said plurality of resources is at a one of said levels below a one of said plurality of levels of said each one of said plurality of resources.

52. The apparatus of claim 51, further comprising:

means for maintaining each one of said plurality of resource control blocks on a corresponding one of said plurality of resources, wherein

a one of a plurality of resource managers corresponding to said each one of said plurality of resource control blocks is configured to perform maintenance of said each one of said plurality of resource control blocks; and

means for maintaining a resource list for each one of said plurality of resource managers, wherein

each said resource list is a hierarchical list of ones of said plurality of resource control blocks that correspond to ones of said plurality of resources under control of a one of said plurality of resources corresponding to said each one of said plurality of resource managers.

53. The apparatus of claim 52, wherein said resource list represents at least a portion of said hierarchy and interdependencies between ones of said plurality of resources.